2578019673604 has 6 divisors (see below), whose sum is σ = 4511534428814. Its totient is φ = 1289009836800.

The previous prime is 2578019673589. The next prime is 2578019673611. The reversal of 2578019673604 is 4063769108752.

It can be written as a sum of positive squares in only one way, i.e., 2124457832704 + 453561840900 = 1457552^2 + 673470^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322252459197 + ... + 322252459204.

It is a 2-persistent number, because it is pandigital, and so is 2⋅2578019673604 = 5156039347208, but 3⋅2578019673604 = 7734059020812 is not.

Almost surely, 2^{2578019673604} is an apocalyptic number.

It is an amenable number.

2578019673604 is a deficient number, since it is larger than the sum of its proper divisors (1933514755210).

2578019673604 is a wasteful number, since it uses less digits than its factorization.

2578019673604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644504918405 (or 644504918403 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 2578019673604 in words is "two trillion, five hundred seventy-eight billion, nineteen million, six hundred seventy-three thousand, six hundred four".